\(\frac{5^4.20^4}{25^5.4^5}=\frac{5^4.5^4.4^4}{\left(5^2\right)^5.4^5}=\frac{5^8.4^4}{5^{10}.4^5}=\frac{1}{25.4}=\frac{1}{100}\)
Ta chỉ việc khai triển ra rồi rút gọn thôi
\(\frac{5^4.20^4}{25^5.4^5}\)
\(=\frac{5^4.5^4.4^4}{\left(5^2\right)^5.4^5}\)
\(=\frac{1}{25.4}\)
\(=\frac{1}{100}\)
Ủng hộ mik nha